// Verify serialVersionUID is properly set
        assertNotNull(exception);
        assertTrue(exception instanceof java.io.Serializable);
    }

    @Test
    public void test_stackTracePresence() {
        // Test that stack trace is present
        SearchQueryException exception = new SearchQueryException("Stack trace test");

        StackTraceElement[] stackTrace = exception.getStackTrace();

Shinsuke Sugaya <******@****.***> 1768120985 +0900

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
    }

    @Test
    public void test_stackTracePresence() {
        // Setup
        final String message = "Test stack trace";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);

Shinsuke Sugaya <******@****.***> 1768120985 +0900

        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_stackTracePresence() {
        // Setup
        final String message = "Query error with stack trace";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);